A. which of the following expressions is correct?
) = 21
-(21) = 21
) = -21
(-21) = 21
b. the distance from a point to two is five units. the point could be located at
-7
-6
6
-3
c. m is an example of all of the following except
a constant
a term
an expression
a variable

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.